JPH027425B2 - - Google Patents
Info
- Publication number
- JPH027425B2 JPH027425B2 JP57048799A JP4879982A JPH027425B2 JP H027425 B2 JPH027425 B2 JP H027425B2 JP 57048799 A JP57048799 A JP 57048799A JP 4879982 A JP4879982 A JP 4879982A JP H027425 B2 JPH027425 B2 JP H027425B2
- Authority
- JP
- Japan
- Prior art keywords
- inspection
- inspected
- speed
- inspection mechanism
- inspecting
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 238000007689 inspection Methods 0.000 claims description 64
- 230000007246 mechanism Effects 0.000 claims description 30
- 238000000034 method Methods 0.000 claims description 22
- 239000000463 material Substances 0.000 claims description 8
- 230000007547 defect Effects 0.000 claims description 5
- 238000012360 testing method Methods 0.000 claims description 5
- 238000012546 transfer Methods 0.000 claims description 5
- 230000032258 transport Effects 0.000 description 9
- 230000001133 acceleration Effects 0.000 description 2
- 230000000737 periodic effect Effects 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
- G01N29/22—Details, e.g. general constructional or apparatus details
- G01N29/26—Arrangements for orientation or scanning by relative movement of the head and the sensor
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B17/00—Measuring arrangements characterised by the use of infrasonic, sonic or ultrasonic vibrations
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2291/00—Indexing codes associated with group G01N29/00
- G01N2291/02—Indexing codes associated with the analysed material
- G01N2291/028—Material parameters
- G01N2291/02854—Length, thickness
Description
【発明の詳細な説明】
ａ 産業上の利用分野
本発明は、パイプ、ロツドのような長さ方法に
延材した丸材の全長を検査する方法に関する。DETAILED DESCRIPTION OF THE INVENTION a. Field of Industrial Application The present invention relates to a method for inspecting the total length of a round material, such as a pipe or rod, which is stretched to length.
ｂ 従来の技術及びその課題
従来、パイプ、ロツドのような長さ方向に延材
した丸材を検査する場合、軸方向に固定的に配設
された検査装置を用いて検査を実施することが、
一般的な方法であつた。b. Prior art and its problems Conventionally, when inspecting a round material stretched in the length direction, such as a pipe or rod, it has been difficult to perform the inspection using an inspection device fixedly disposed in the axial direction.
It was a common method.
しかし、製品を個々に検査する際、従来の検査
方法に付随する欠点は、被検査物の回転と送りと
により被検査物の最も重点的な検査を必要とする
始端ならびに後端に、楔状の未検査部分が生じる
ことである。 However, when inspecting individual products, a drawback associated with traditional inspection methods is that the rotation and feeding of the inspected object creates a wedge-shaped This results in uninspected parts.
このため、従来の検査方法においては、この未
検査部分を補足的に再検査する必要があつた。 Therefore, in the conventional inspection method, it was necessary to supplementally re-inspect this uninspected portion.
また、寸法が小さい被検査物においては、上記
未検査部分が生じることを避けるため、端部同士
を突き当てて接続した状態で検査を行なうことが
知られている。 Furthermore, in order to avoid the occurrence of uninspected portions in the case of small-sized objects to be inspected, it is known that the inspection is performed with the ends of the objects butted against each other and connected.
しかし、この方法の場合も、最初の被検査物の
始端と最後の被検査物の終端とに、未検査のまま
の楔状の部分が残る。 However, even in the case of this method, uninspected wedge-shaped portions remain at the starting end of the first inspected object and at the end of the last inspected object.
なお、比較的寸法が大きい熱間仕上げされた被
検査物の場合は、軸方向と半径方向とにずれが生
じるので、検査技術的には上記突き当て接続の検
査も実施することができない。このことは、端部
に溶接層を備えている被検査物にも当てはまるこ
とである。なぜなら、突き当て接続する際、被検
査物端部を損傷する危険があるからである。 Note that in the case of a relatively large hot-finished object to be inspected, deviations occur in the axial direction and the radial direction, so it is impossible to inspect the above-mentioned butt connection from an inspection technique point of view. This also applies to objects to be inspected that have welded layers at their ends. This is because there is a risk of damaging the end portion of the object to be inspected when making the butt connection.
本発明は、上述した従来の検査方法が有する欠
点を解消し、被検査物の始端から終端までを完全
に検査し得る検査方法を提供するものである。 The present invention eliminates the drawbacks of the conventional inspection methods described above and provides an inspection method that can completely inspect an object to be inspected from the starting end to the ending end.
ｃ 課題を解決しようとするための手段
本発明は、上述した課題を解決するため、パイ
プ、ロツドのような被検査物を、長さ方向の軸ま
わりに回転させながら軸方向に移送し、上記移送
される被検査物の全長を、超音波によつて長さ方
向と横方向の欠陥および肉厚を検査する検査機構
によつて検査する方法において、
上記被検査物の始端の検査は、上記検査機構
を、回転しながら移送される被検査物の少なくと
も１回転分の移送距離を被検査物の移送速度と同
速度で追跡させることにより行ない、
上記被検査物の中央領域の検査は、上記検査機
構を、上記被検査物を追跡させる以前のスタート
位置に戻す間、及び引き続きスタート位置に滞留
させている間に行ない、
上記被検査物の後端の検査は、再び上記検査機
構を、回転しながら移送される被検査物の少なく
とも１回転分の移送距離を被検査物の移送速度と
同速度で追跡させることにより行なうようにした
丸材の検査方法である。c. Means for Solving the Problems In order to solve the above-mentioned problems, the present invention aims to transport an object to be inspected, such as a pipe or rod, in the axial direction while rotating it around an axis in the longitudinal direction. In a method in which the entire length of the transferred object is inspected by an inspection mechanism that uses ultrasonic waves to inspect longitudinal and lateral defects and wall thickness, the inspection of the starting end of the object is carried out by the method described above. The inspection mechanism is caused to track the transport distance of at least one rotation of the object to be inspected while being rotated at the same speed as the transfer speed of the object to be inspected, and the inspection of the central area of the object to be inspected is performed as described above. The inspection is carried out while the inspection mechanism is returning to the starting position before tracking the inspection object, and while it continues to stay at the start position, and the inspection of the rear end of the inspection object is performed by rotating the inspection mechanism again. In this method, the round material is inspected by tracking the transport distance of at least one rotation of the object being transported at the same speed as the speed at which the object is being transported.
本発明にかかる方法の特徴は、各被検査物を検
査する場合、その始端から終端までを完全に検査
できるため再検査を行なわなくてもすむことであ
る。 A feature of the method according to the present invention is that when inspecting each object to be inspected, it can be completely inspected from the starting end to the ending end, so there is no need to perform re-inspection.
ｄ 実施例
以下、本発明の実施例を概念的に図解した添付
図面を参照しながら詳細に説明する。d. Embodiments Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings, which conceptually illustrate embodiments.
第１ａ図には、検査設備１の機械的な部分が示
されているのが、この検査設備１では被検査物は
傾斜して配設されたラジアル・ローラ７，８，
９，１０上に載置された状態で、長さ方向の軸の
まわりに回転しながら軸方向に移送されうように
構成されている。 FIG. 1a shows the mechanical part of the inspection equipment 1. In this inspection equipment 1, the object to be inspected is mounted on radial rollers 7, 8, which are arranged at an angle.
9 and 10, it is configured to be transferred in the axial direction while rotating around the longitudinal axis.
ラジアル・ローラ７，８，９，１０の間には、
検査機構４，５，６が配設されており、該検査機
構４，５，６は電気モータ３で移動するサドル２
上で被検査物の長さ方向の軸に平行に、かつ両方
向に移動することができるように構成されてい
る。 Between the radial rollers 7, 8, 9, 10,
Inspection mechanisms 4, 5, and 6 are provided, and each of the inspection mechanisms 4, 5, and 6 is a saddle 2 that is moved by an electric motor 3.
It is configured to be able to move in both directions parallel to the longitudinal axis of the object to be inspected.
本発明にかかる方法に従つて被検査物と検査機
構とが移動する要領が第１ａ図より第１ｃ図まで
に図解されている。 The manner in which the object to be inspected and the inspection mechanism are moved according to the method according to the present invention is illustrated in FIGS. 1a to 1c.
また、第２ａ図より第２ｄ図までは、第１ａ図
より第１ｃ図までに示されている検査機構によ
り、被検査物の始端と終端の少なくとも１回転分
の移動距離を追跡する状態が図解されている。 Furthermore, Figures 2a to 2d illustrate the state in which the inspection mechanism shown in Figures 1a to 1c tracks the moving distance of at least one rotation of the starting and ending ends of the object to be inspected. has been done.
ここで、まず長さ方向の軸のまわりに回転して
いる被検査物が検査機構４に接近した状態が第２
ａ図に示されている。被検査物の始端が位置Ａ
に到達すると、検査機構全体が被検査物の移送方
向に移動する。 Here, first, the state in which the object to be inspected, which is rotating around the axis in the longitudinal direction, approaches the inspection mechanism 4 is the second state.
It is shown in Figure a. The starting end of the object to be inspected is at position A
When reaching , the entire inspection mechanism moves in the direction of transport of the object to be inspected.
次いで短い加速区画Sbを移動したあと、すな
わち位置AI′に到達したあと、検査機構の中に取
り付けられているセンサー、換言すれば検査ヘツ
ド装置の後端が被検査物の始端を把握するよう検
査機構４が持ち上げられて、コンピユータ制御さ
れる。 Next, after moving through the short acceleration zone Sb, that is, after reaching the position AI', an inspection is performed so that the sensor installed in the inspection mechanism, in other words, the rear end of the inspection head device grasps the starting edge of the object to be inspected. The mechanism 4 is lifted and computer controlled.
被検査物と接触されている検査機構４は、同じ
軸方向の速度で移動距離Sprに応じた被検査物の
少なくとも１回転ぶんの期間、位置AI″まで被検
査物を追跡する。 The inspection mechanism 4, which is in contact with the object to be inspected, tracks the object to be inspected to the position AI'' at the same axial speed for a period of at least one revolution of the object to be inspected, which corresponds to the moving distance Spr.
かくして、被検査物と検査機構４が周期的に移
動することにより被検査物の始端に未検査のまま
の楔状部分が生じることを避けることができる。 In this way, it is possible to avoid the formation of an uninspected wedge-shaped portion at the starting end of the object due to periodic movement of the object to be inspected and the inspection mechanism 4.
一方、ラジアル・ローラ８，９，１０の間に設
けられている検査機構５および６についても上記
したものと同じ工程が繰り返される。 On the other hand, the same process as described above is repeated for the inspection mechanisms 5 and 6 provided between the radial rollers 8, 9, and 10.
前記検査機構４が再びスタート位置に戻つてパ
イプ後端を把握するため、被検査物が移送されて
いる間、第２ｂ図に示されている位置AI″に到達
したあと、ゆつくりと反対方向に位置AI4まで距
離Srぶんだけ検査機構４を移動させなければな
らない。この移動は、被検査物の軸方向の速度に
比例した速度でコンピユータ制御されながら実施
される。 In order for the inspection mechanism 4 to return to the starting position again and grasp the rear end of the pipe, while the inspection object is being transferred, after reaching the position AI'' shown in Figure 2b, it slowly moves in the opposite direction. The inspection mechanism 4 must be moved by a distance Sr to the position AI 4. This movement is carried out under computer control at a speed proportional to the axial speed of the object to be inspected.
反対方向に移動するもので、被検査物と検査機
構４の間の相対的な軸方向の速度は増大する。こ
の結果、検査機構４が戻り動作している間、両方
の移動にもとづく送りは、移送装置を調整するこ
とにより与えられた送りと比べ大きくなる。戻り
速度の大きさを選択することにより一定のオーバ
ーラツプを考慮したセンサー、換言すれば検査ヘ
ツド装置により与えられる最大許容送りを越える
ことはない。このことは、検査機構が停止したあ
と、すなわち、位置AI4に達したあと、検査のた
めの送りが移送装置により与えられる送りと同じ
になり、そしてこの送りの値が上述の最大許容送
りの値より小さいことを意味している。 Moving in the opposite direction, the relative axial velocity between the object to be inspected and the inspection mechanism 4 increases. As a result, during the return movement of the inspection mechanism 4, the feed due to both movements will be greater compared to the feed provided by adjusting the transport device. By selecting the magnitude of the return speed, a certain overlap is taken into account by the sensor, in other words the maximum permissible advance provided by the inspection head device is not exceeded. This means that after the inspection mechanism has stopped, i.e. after reaching position AI 4 , the feed for inspection is the same as the feed provided by the transfer device and the value of this feed is equal to the maximum permissible feed mentioned above. It means less than the value.
次いで、第２ｃ図に示されているように、被検
査物の終端が位置EIに到達すると、検査機構４
は再び被検査物の移送方向に移動する。 Then, as shown in FIG. 2c, when the end of the object to be inspected reaches position EI, the inspection mechanism 4
moves again in the transport direction of the object to be inspected.
検査機構４の中に取り付けられているセンサ
ー、換言すれば検査ヘツド装置の前端は、加速区
画Sbを通過したあと、すなわち、位置EI′に到達
したあとコンピユータの制御をうけながら被検査
物の端部を把握する。 The sensor installed in the inspection mechanism 4, in other words, the front end of the inspection head device, moves the edge of the object under computer control after passing through the acceleration section Sb, that is, after reaching the position EI'. Understand the department.
検査機構４は、再び少なくとも被検査物の１回
転の間、同じ軸方向の速度で被検査物を追跡す
る。 The inspection mechanism 4 again tracks the object to be inspected at the same axial speed for at least one rotation of the object to be inspected.
この場合も、周期的な移動が行われるから、未
検査のままの楔状の部分が生じることはない。 In this case as well, since periodic movement is performed, no wedge-shaped portions remain uninspected.
移動距離Sprに対応した位置EI″に達したあと、
検査機構４は下がり、第２ｄ図に示されているよ
うに早い速度で距離Srに対応したスタート位置
AI4に戻り、かくして後続の被検査物について同
じ要領で再び検査工程を始めることができる。 After reaching the position EI″ corresponding to the moving distance Spr,
The inspection mechanism 4 is lowered and moves at a fast speed to the starting position corresponding to the distance Sr, as shown in Fig. 2d.
Returning to AI 4 , one can thus begin the inspection process again in the same manner for subsequent inspected objects.
なお、サドル２上を互に独立して移動すること
ができる３組の検査機構４，５，６を備えた検査
設備の概念は、第１ａ図より第１ｃ図までに示さ
れている通りである。 The concept of the inspection equipment equipped with three sets of inspection mechanisms 4, 5, and 6 that can move independently on the saddle 2 is as shown in FIGS. 1a to 1c. be.
この構成態様は、たとえば、第２ａ図より第２
ｄ図までを参照して説明されているように、移動
工程をそれぞれ別に実施する３つの独立した検査
機構４，５，６の中に、長さ方向の欠陥と横方向
の欠陥および肉厚とを測定する検査面が設けられ
ている超音波検査設備の構造に相当するものであ
る。 This configuration mode is, for example, the second one from FIG. 2a.
As explained with reference to Figure d, longitudinal defects, lateral defects and wall thickness defects are detected in three independent inspection mechanisms 4, 5 and 6, each carrying out the movement process separately. This corresponds to the structure of ultrasonic inspection equipment that is equipped with an inspection surface for measuring .
被検査物の端を完全に把握する精度は被検査物
の移動距離を追跡する精度次第である。螺旋状に
移送される製品の工程を直接正確に追跡すること
は極端に費用がかかる作業である。このため、た
とえば、被検査物を移送する駆動装置の移動距離
を表すパルスにもとづいてコンピユータにより増
分量を計算することにより間接的に移動距離を追
跡することが可能である。 The accuracy of completely grasping the edge of the object to be inspected depends on the accuracy of tracking the distance traveled by the object. Directly and accurately tracking the process of a spirally transported product is an extremely expensive task. Therefore, it is possible, for example, to indirectly track the distance traveled by calculating the incremental amount by a computer based on the pulses representing the distance traveled by the drive device that transports the object to be inspected.
この間接的な移動距離の追跡は、被検査物の１
回転当りの送りと被検査物と係合している駆動輪
またはパルス発進器のすべりに関する条件が一定
であることにもとづいて実施されるものである。
これらのフアクターは実際上ある程度変動するか
ら、たとえば、各検査機構の直前に設けられた光
学遮断器のようなテスト・マークを用いて移動距
離の追跡を制御し、必要な場合、補正を行わなけ
ればならない。 This indirect tracking of the distance traveled can be done by
This is carried out on the basis that the conditions regarding the feed per revolution and the slippage of the drive wheel or pulse starter engaged with the object to be inspected are constant.
Since these factors vary to some extent in practice, the tracking of distance traveled must be controlled and corrections made if necessary, for example using test marks such as optical breakers placed just before each test feature. Must be.
以上、本発明の実施例につき説明したが、本発
明は既述の実施例に限定されるものではなく、本
発明の技術的思想に基づいて、各種の変形及び変
更が可能であることは当然である。 Although the embodiments of the present invention have been described above, the present invention is not limited to the embodiments described above, and it is obvious that various modifications and changes can be made based on the technical idea of the present invention. It is.
ｅ 発明の効果
本発明にかかる丸材の全長を検査する方法は、
上述した如く、該丸材の端部、すなわち始端及び
終端を検査する場合においては、検査機能を回転
しながら移送される被検査物の少なくとも１回転
分の移送距離を被検査物の移送速度と同速度で追
跡させることにより行なうため、丸材の端部に未
検査の楔状部分が生じることがなく、丸材の始端
から終端までを完全に検査することができる。e Effect of the invention The method for inspecting the full length of a round material according to the present invention is as follows:
As mentioned above, when inspecting the ends of the round material, that is, the starting end and the ending end, the transport distance of at least one rotation of the object to be inspected while rotating the inspection function must be the same as the transport speed of the object to be inspected. Since this is carried out by tracking at high speed, there is no uninspected wedge-shaped portion at the end of the round material, and the round material can be completely inspected from the starting end to the end.
第１ａ図より第１ｃ図までは、被検査物の始端
及び終端を把握する装置を備えた検査設備の移送
システムを長さ方向に切断した側面図、第２ａ図
より第２ｄ図までは、本発明にかかる検査方法に
より被検査物の検査要領を図解した概念図であ
る。
１…検査設備、２…サドル、３…モータ、４，
５，６…検査機構、７，８，９，１０…ラジア
ル・ローラ。
Figures 1a to 1c are side views cut in the length direction of a transfer system of inspection equipment equipped with a device for grasping the starting and ending ends of the inspected object, and Figures 2a to 2d are main views. FIG. 2 is a conceptual diagram illustrating the procedure for inspecting an object to be inspected using the inspection method according to the invention. 1...Inspection equipment, 2...Saddle, 3...Motor, 4,
5, 6... Inspection mechanism, 7, 8, 9, 10... Radial roller.
Claims (1)
向の軸まわりに回転させながら軸方向に移送し、
上記移送される被検査物の全長を、超音波によつ
て長さ方向と横方向の欠陥および肉厚を検査する
検査機構によつて検査する方法において、 上記被検査物の始端の検査は、上記検査機構
を、回転しながら移送される被検査物の少なくと
も１回転分の移送距離を被検査物の移送速度と同
速度で追跡させることにより行ない、 上記被検査物の中央領域の検査は、上記検査機
構を、上記被検査物を追跡させる以前のスタート
位置に戻す間、及び引き続きスタート位置に帯留
させている間に行ない、 上記被検査物の後端の検査は、再び上記検査機
構を、回転しながら移送される被検査物の少なく
とも１回転分の移送距離を被検査物の移送速度と
同速度で追跡させることにより行なうことを特徴
とするパイプ、ロツドのような長さ方向に延材し
た丸材の全長を検査する方法。[Claims] 1. An object to be inspected, such as a pipe or rod, is transferred in the axial direction while being rotated around an axis in the longitudinal direction,
In the method of inspecting the entire length of the transferred inspection object using an inspection mechanism that inspects longitudinal and lateral defects and wall thickness using ultrasonic waves, the inspection of the starting end of the inspection object includes: The inspection mechanism is configured to track the transport distance of at least one rotation of the test object being transferred while rotating at the same speed as the transport speed of the test object, and the inspection of the central region of the test object is performed by: The inspection mechanism is operated while the object to be inspected is returned to the starting position before being tracked, and while the object is being held at the starting position. A longitudinally extending material such as a pipe or rod, characterized in that the transfer distance of at least one rotation of the object to be inspected is tracked at the same speed as the transfer speed of the object to be inspected. A method of inspecting the entire length of round timber.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE3114850A DE3114850C2 (en) | 1981-04-09 | 1981-04-09 | Device for testing elongated, round workpieces that move helically in their longitudinal direction, such as tubes and rods, over their entire length |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS57175953A JPS57175953A (en) | 1982-10-29 |
| JPH027425B2 true JPH027425B2 (en) | 1990-02-19 |
Family
ID=6130033
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP57048799A Granted JPS57175953A (en) | 1981-04-09 | 1982-03-26 | Method of and apparatus for inspecting overall length of round material extending lengthwise like pipe and rod |
Country Status (12)
| Country | Link |
|---|---|
| US (1) | US4516429A (en) |
| JP (1) | JPS57175953A (en) |
| AT (1) | AT387284B (en) |
| BE (1) | BE892768A (en) |
| DE (1) | DE3114850C2 (en) |
| ES (1) | ES510009A0 (en) |
| FR (1) | FR2503869B1 (en) |
| GB (1) | GB2099996B (en) |
| IT (1) | IT1153464B (en) |
| MX (1) | MX159692A (en) |
| NL (1) | NL8200749A (en) |
| SE (1) | SE454810B (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4700572A (en) * | 1985-04-03 | 1987-10-20 | Mitsubishi Denki Kabushiki Kaisha | Automatic ultrasonic flaw detecting system |
| DE3643515A1 (en) * | 1986-12-19 | 1988-07-07 | Benteler Werke Ag | Method of nondestructively testing metal pipes and rods and device for carrying out the method |
| US5063779A (en) * | 1988-09-28 | 1991-11-12 | General Electric Company | Non-destructive dimensional and flaw inspection of thin wall tube weldments |
| US5201226A (en) * | 1990-07-20 | 1993-04-13 | Westinghouse Electric Corp. | Ultrasonic tube inspection station for a rapid changeover multi-diameter tube inspection system |
| US5178014A (en) * | 1990-07-20 | 1993-01-12 | Westinghouse Electric Corp. | Rapid changeover ultrasonic tube inspection system for inspecting tubes of different diameters for flaws of different orientations |
| US5161412A (en) * | 1990-07-20 | 1992-11-10 | Westinghouse Electric Corp. | Ultrasonic tube inspection station for a rapid changeover multidiameter tube inspection system |
| NL1024726C2 (en) * | 2003-11-06 | 2005-05-09 | Roentgen Tech Dienst Bv | Method for checking a weld between two metal pipelines. |
| JP6512157B2 (en) * | 2016-04-13 | 2019-05-15 | Ｊｆｅスチール株式会社 | Thickness measurement apparatus, thickness evaluation apparatus, thickness measurement method and thickness evaluation method |
| CN113008659B (en) * | 2021-02-08 | 2022-11-15 | 新兴铸管股份有限公司 | Pressing mixing pipe conveying device of hydraulic press |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL302332A (en) * | 1963-01-02 | |||
| US3289468A (en) * | 1963-05-29 | 1966-12-06 | Southwest Res Inst | Ultrasonic transducer positioning apparatus |
| US3375706A (en) * | 1964-12-28 | 1968-04-02 | Combustion Eng | Ultrasonic flaw detecting system |
| GB1226094A (en) * | 1967-03-08 | 1971-03-24 | ||
| US3981184A (en) * | 1975-05-07 | 1976-09-21 | Trw Inc. | Ultrasonic diagnostic inspection systems |
| US4217782A (en) * | 1978-07-25 | 1980-08-19 | W. C. Lamb | Ultrasonic inspection device and method of inspection |
| NL7904973A (en) * | 1979-06-26 | 1980-12-30 | Roentgen Tech Dienst Bv | SYSTEM FOR EXAMINING WELDED CONNECTIONS IN PIPES WITH ULTRASONIC WAVES. |
| US4387598A (en) * | 1981-09-15 | 1983-06-14 | Electric Power Research Institute | Pipe scanner mechanism |
-
1981
- 1981-04-09 DE DE3114850A patent/DE3114850C2/en not_active Expired
-
1982
- 1982-02-22 IT IT19780/82A patent/IT1153464B/en active
- 1982-02-24 NL NL8200749A patent/NL8200749A/en not_active Application Discontinuation
- 1982-02-26 SE SE8201207A patent/SE454810B/en not_active IP Right Cessation
- 1982-03-01 ES ES510009A patent/ES510009A0/en active Granted
- 1982-03-04 AT AT0085882A patent/AT387284B/en not_active IP Right Cessation
- 1982-03-04 US US06/354,664 patent/US4516429A/en not_active Expired - Fee Related
- 1982-03-26 JP JP57048799A patent/JPS57175953A/en active Granted
- 1982-04-02 FR FR8205790A patent/FR2503869B1/en not_active Expired
- 1982-04-06 GB GB8210215A patent/GB2099996B/en not_active Expired
- 1982-04-06 BE BE0/207760A patent/BE892768A/en not_active IP Right Cessation
- 1982-04-07 MX MX192204A patent/MX159692A/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| US4516429A (en) | 1985-05-14 |
| MX159692A (en) | 1989-08-07 |
| FR2503869B1 (en) | 1986-02-21 |
| FR2503869A1 (en) | 1982-10-15 |
| SE8201207D0 (en) | 1982-02-26 |
| GB2099996A (en) | 1982-12-15 |
| ES8302913A1 (en) | 1983-01-16 |
| ES510009A0 (en) | 1983-01-16 |
| DE3114850C2 (en) | 1984-05-30 |
| NL8200749A (en) | 1982-11-01 |
| SE454810B (en) | 1988-05-30 |
| IT8219780A0 (en) | 1982-02-22 |
| ATA85882A (en) | 1988-05-15 |
| AT387284B (en) | 1988-12-27 |
| JPS57175953A (en) | 1982-10-29 |
| SE8201207L (en) | 1982-10-10 |
| IT1153464B (en) | 1987-01-14 |
| DE3114850A1 (en) | 1982-10-21 |
| BE892768A (en) | 1982-08-02 |
| GB2099996B (en) | 1985-04-11 |
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